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(Nomen E. H; GORBIN.

, Y ROTARY ENGINE. No. 282,171. Patented July 31; 1888.

40 shafts D D',

t `1,5 arranged to slide back and forth;

UNITED STATES PATENT OFFICE."

ELIJAH H. ooEBIN, oF DEcArUE, INDIANA, AssIGNoE ro HIMsELE, JOHN T.FRANCE, MARK M. MCCONNELL PLACE, JAMES YV. HOAGLAND, JOHN B. ISRAEL C.KING, ALLOE SAMEPLAOE.

ROTARY ENGINE.

, "GEORGE WV. MOOONN ELL, JAMES WV. MEIBEBS, LEWIS H. COBBIN, AND

SPECIFICATION forming part of Letters lettent-lfo.` 282,171,'datedJuly'31, 1883.

Application filed December 7, 1882. (No model.) v

.To all whom it may concern:

Be it known that I, ELIJAII HENRY GoEBIN, a citizen of the United Statesof America, residing'at Decatur, in the county of Adams and State ofIndiana, have inventeda new and useful Improvement in Rotary Engines,Vof which v the following is a specification, to wit:

This invention relates to rotary engines; and it consists in certainnovel details of construc- Io tion, substantially as and for the purposehereinafter more fully set forth, and pointed out in the claims.`

In order to enable others skilled in the art to which my inventionappertains to make and use the same, I will now proceed to describe,

its construction and operation, annexed drawings, in ywhich` p Figure lis a front elevation of my invention; Fig. 2, a central vertical sectionof the 2o same. L

A represents a circular casing, in which is placed a wheel, B; somewhatsmaller than the interior of the casing, in order toleave a steamspacebetween it and the periphery of the referring to the 2 5 wheel, and uponthe surface of said wheelis a head or stop, b, filling this steam-spaceon one side, and serving the purpose of a piston in engines of ordinaryconstruction. 1

Upon opposite sides of the casing A is a box,

ber, a, and a lower chamber, c', which are vseparated by a web, a2,having a steam-passage, c3, connecting the two chambers.

Resting on the upper side of the web or diy vision c2 are two valves, CC, adapted to slide horizontally to cover and uncover thef steampassagea3. These valves are each provided with lugs or projections c c, withwhich engage two arms, D D,Idepending from rockjournaled in the boxes A,as shown.

Below the web a2, in suitable cored spaces between the lowersteam-space, faQ-and the in` v terior of the casing, are two slidingheads, E,

vThe slides are projected into the interior of the casing o A containinan u er steam s ace or chaln- 3 7 e p r Y wheel B by the action of thesteam when admitted to the lower steamchamber, and are drawn back againby a coiled spring, e, upon an arm, projecting from the 5o rear end ofthe sliding heads E. The movement of these heads is limited by a stop orprojection, e2, upon the head playing in a space cut out of the casingA, asshown. l

\ Upon the under side of the web a'z in one of 55 the boxes A and underthe sliding head E in the other boxY A is a cored passage, d, openinginto the interior of the casing A at its inner end and into the space`in which the slides E move at the other. This passage d is 6o closed tothe admission of steam when the slides are drawn back and opened whenthey areprojected. l

F represents the` steam-supply pipe, forked against the face of the andcommunicating with each of the upper I steam-chambers, a, in the boxesA', and E are two exhaust-pipes, one in the upper and one in the lowerside of the casing.

The wheel B is arranged upon a drivingshaft, B', on ywhich is securedaneccentric, b, 7o to which are connected pitmen b2, pivoted at theirother ends to arms d upon the rockshafts D, by means of which theslide-valves C C are shifted at the proper time to admit steam behindthe steam-head b.

y The operationV of this engine is as follows:` Steam being admittedfrom the pipe F tothe upper chambers, a a, one of the valves C C isopened and the other closed. When the valve. Gis opened steamv passesinto the lower chamber, c', andits pressure upon the sliding head Edrives this head into the casing against the face ofthe wheel B, andallows, thesteam to pass through the cored passage d into the casingbehind the stop or head b, and its recoil against the head E drives thewheel B around. When the stop b on the wheel has passed the exhaust F,the steam escapes, and the eccentric bactuates the valves C C, throughthe mediuin of the rock-shaft D and its arms D d and pitman b2, .toclose the port a? and shut off the steam. The head E being now releasedfrom the pressureof steam, the spring e 4retracts it and closes thepassage d. The momentum of the engine carries the stop b past the neXtsliding head E, the eccentric opens the other valve and admits thesteam, and the operation is repeated, obtaining a steady and regularmotion with a very economical use of steam and very little wear upon themachine. The parts to which steam is admitted are packed in any of theWell-known ways found most desirable.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. The combination', with the cylindrical casingA, having a wheel, B,and steam-chests A A, each provided withl chambers a ct, separated by arecessed web, a2, having passage a3,

of the sliding heads E, each having spring e and stop e2, theslide-valve C, and the rock-shaft D',

having arms D, engaging said valves, substantially as shown anddescribed.

2. In a rotary engine, the casing A, having' steam-chests A, eachprovided with two cham- ELIJAH HENRY CORBIN. A

'Vitnesses: A. J. HILL,

JAs. T. MERRYMAN.

